Free Standing Deck Roof Requirements

Likewise the load that each deck foot anchor can support depends on the bearing capacity of the soil.

Free standing deck roof requirements.

Typical decks are designed to support 55 psf lbs per square foot. They have to be a bit longer than the patio. Design load that s 30 sq. Deck foot anchor could support 1500 lb.

Porch decks require 25 additional psf for roof loads for a total of 80 psf. Of deck or shed per footing. A free standing roof needs to have posts sunk into the ground. The footings for porch decks must be larger than deck footings.

Unlike decks attached to houses freestanding decks must be braced perpendicular to the house. You can cut them down as needed. The bracing material must be 2 x 4 lumber and you must use a 1 2 inch through bolt at each connection point every deck higher than 30 inches whether it s free standing or not must have a railing. As a result most decks have inadequate footings to support a new porch roof.

Free standing covered deck plans are available in abundance online. Many porches use 22 diameter corner and intermediate footings. The railing must be at least 36 inches high and it must include balusters that are no more than 4 inches apart. At the code minimum 50 lb.

Decks 24 to 5 10 180 cm need 36 guards and anything above 5 10 requires a 42 high railing. If it is next to a house or structure it should be secured to the siding or roof of that structure as well to keep it stable through high winds and lashing rains. Start here if you re building a roof over a patio or deck. The minimum height of the railing varies based on the height of the deck.

Standard bracing between posts and the outer beam is used on freestanding decks as it is on many decks attached to houses. To structure the roof take your 2 6 boards. Freestanding decks greater than 2 feet above grade must be able to resist lateral and horizontal movement by providing diagonal bracing. This article discusses strategies for building over an existing slab patio or over a deck and offers links to articles about the specific tasks such as pouring the footings raising posts and so forth.

Because there isn t a house to anchor one end of the deck uplift and racking forces are greater issues that must be addressed in the structural design. Using the irc s default soil bearing capacity of 1500 lb.